code: def matchSetContribution(match_set, target_set, index):
      """Compute the contribution of the string at *index* in the match set."""
      contribution = 0.0
      for t in target_set:
          match = -float("inf")
          id = -1
          for i, m in enumerate(match_set):
              v = matchStrength(m, t)
              if v > match:
                  match = v
                  id = i
          if id == index:
              contribution += match
  
      return (contribution / len(target_set),)
  
file_path: deap/examples/coev/coop_base.py
imports: import random
  from deap import base
  from deap import creator
  from deap import tools
label_desc: Use image node_id 6 for calling a global function with example usage: matchSetContribution(match_set, target_set, index) and returns: unknown